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Finding the Fourth Proportional to 27,212.78, 40,819.44 and 17,911.82

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Solution

The fourth proportional to 27,212.78, 40,819.44 and 17,911.82 is: 26,867.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,212.78 : 40,819.44 = 17,911.82 : x
  2. Step 2: Convert to fraction form
    27,212.78/40,819.44 = 17,911.82/x
  3. Step 3: Cross multiply
    27,212.78x = 40,819.44 × 17,911.82
  4. Step 4: Simplify right side
    27,212.78x = 731,150,257.68
  5. Step 5: Solve for x
    x = 731,150,257.68/27,212.78
  6. Step 6: Final answer
    x = 26,867.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.